rb_fd_zero       1064 ext/socket/socket.c 	rb_fd_zero(fds_w);
rb_fd_zero       1065 ext/socket/socket.c 	rb_fd_zero(fds_e);
rb_fd_zero        211 include/ruby/intern.h void rb_fd_zero(rb_fdset_t *);
rb_fd_zero       7326 io.c               rb_fd_zero(&stp->fds);
rb_fd_zero       7341 io.c               rb_fd_zero(&stp->fds);
rb_fd_zero       2247 thread.c       #define FD_ZERO(f)	rb_fd_zero(f)
rb_fd_zero       2293 thread.c       #define FD_ZERO(f)	rb_fd_zero(f)